An iPad I have was previously set up with a different Apple ID (see my question and its duplicate). I have since obtained the Apple ID and password for the previous owner, and used those to proceed through the welcome/setup process. It then asked for an another Apple ID for iCloud, and I gave it mine. Does that mean that it is now fully 'switched over' to my Apple ID, or might the activation lock still be associated with the previous owner, were the device ever to be reset? There doesn't appear to be anywhere in the settings screen explicitly associated with the activation lock, just the iCloud ID (which according to the setup process is a separate concept).
Apple's procedure on how to tell if a device is free from activation lock is posted pubicly:
There are steps you can take on the device, but I prefer the web interface:
The steps to remove a device from the previous owner is here: http://support.apple.com/kb/TS4515
It doesn't look to me like you have completed the steps needed to know it's detached from the lock. I would go over TS4515 and or use the procedure in HT201365 if the web says it's still locked to an Apple ID.